Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Sensor Type	DS18B20 Digital Temperature Sensor
Probe Material	Stainless Steel 304
Waterproof Rating	IP68
Temperature Range	-55°C to +125°C
Accuracy	±0.5°C (from -10°C to +85°C)
Cable Length	1 Meter (Customizable)
Interface Protocol	1-Wire Digital Interface
Supply Voltage	3.0V to 5.5V DC
Response Time	< 750ms typical
Application	Aquariums, HVAC, Industrial Monitoring, DIY Projects

6 reviews

Anonymous

Mar 31, 2026

Rating: 5/5

Robust and reliable

Used this in an outdoor weather station. It has survived rain and freezing temperatures without failing. The 1-wire protocol makes wiring multiple sensors very easy.

Anonymous

Mar 29, 2026

Rating: 4/5

Works as advertised

Standard DS18B20 performance. Nothing fancy, but it does exactly what it says. The waterproof seal on the probe looks professional. Deducted one star because the connector wasn't included, just bare wires.

Anonymous

Mar 25, 2026

Rating: 5/5

Perfect for my aquarium project

This sensor works flawlessly with my Arduino setup. The waterproofing is solid, and I've had it submerged in my tank for two weeks with no issues. Readings are consistent and match my separate thermometer.

Anonymous

Mar 23, 2026

Rating: 5/5

Great for smart home integration

Integrated this into my Home Assistant dashboard. Response time is quick, and the data is stable. Highly recommend for anyone building a custom thermostat solution.

Anonymous

Mar 16, 2026

Rating: 4/5

Good value, accurate readings

I bought five of these for a home brewing temperature monitoring system. They are accurate within the stated range. The only minor issue is the cable could be a bit more flexible, but overall great value.

Anonymous

Mar 03, 2026

Rating: 5/5

Essential for soil monitoring

I use this to monitor soil temperature in my greenhouse. The stainless steel probe is durable and doesn't corrode. Setup was straightforward with my Raspberry Pi.

5 FAQ

Q: What library do you recommend for using this with Arduino?

A: We recommend the standard 'OneWire' and 'DallasTemperature' libraries available in the Arduino Library Manager. They are fully compatible with the DS18B20 chip.

Q: Does this module require an external pull-up resistor?

A: Yes, the 1-Wire protocol typically requires a 4.7kΩ pull-up resistor between the data line and VCC. Some breakout boards include this, but if connecting raw wires, you will need to add one.

Q: Can this sensor be used directly in saltwater?

A: Yes, the stainless steel 304 probe is resistant to corrosion and suitable for saltwater applications like marine aquariums, though prolonged exposure should be monitored.

Q: Is the cable length customizable if I need 5 meters?

A: The standard listing comes with a 1-meter cable. However, we offer custom lengths up to 10 meters upon request via our contact form or bulk order options.

Q: What is the maximum operating voltage?

A: The DS18B20 sensor operates safely between 3.0V and 5.5V DC. Exceeding 5.5V may damage the internal circuitry.

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